Out of Bounds Write Vulnerability in MediaTek WLAN AP Firmware
CVE-2025-20646

9.8CRITICAL

Key Information:

Vendor

MediaTek
Status
Mt6890, Mt7915, Mt7916, Mt7981, Mt7986
Vendor
CVE Published:
3 March 2025

What is CVE-2025-20646?

The WLAN AP firmware from MediaTek presents a vulnerability where improper input validation can lead to an out of bounds write. This security flaw could enable remote escalation of privileges without the need for additional execution privileges. Notably, user interaction is not required for exploitation, making this vulnerability particularly concerning for users relying on the firmware for secure operations. To mitigate the risks associated with this vulnerability, it is crucial for users to apply the provided patch (Patch ID: WCNCR00389074) promptly.

Affected Version(s)

MT6890, MT7915, MT7916, MT7981, MT7986 SDK release 7.6.7.2 and before

References

https://corp.mediatek.com/product-security-bulletin/March...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2025-20646 : Out of Bounds Write Vulnerability in MediaTek WLAN AP Firmware